Pipe-stopper.



No. mmso. Patented June 4, 1901. a. B. SIDELINGER.

PIPE STOPPER.

(Application filed Nov. 23, 1900.)

(No llloflal s 1 d l *6 1 a WITNESSES IN VENTOH I rs'oqyeflfi'ai llherMMQMZ 8y A TTOHNEYS UNTTEE STATES PATENT OEEIcE.

GEORGE B. SIDELINGER, Oh DANVILLE, ILLINOIS, ASSIGNOR OF ONE-HALF TOGEORGE J. LONG, OF LOUISVILLE, KENTUCKY.

PlPE-STOPPER.

SPECIFICATION forming part of Letters Patent N 0. 675,680, dated June 4,1901.

Application filed November 23, 1900. Serial No. 87,467. (No model.)

To all whom it may concern:

Beit known that I, GEORGE B. SIDELINGER, a citizen of the United States,and a resident of Danville, in the county of Vermilion and State ofIllinois, have invented a new and Improved Pipe-Stopper, of which thefollowing is a full, clear, and exact description.

This invention relates to a means for hermetically sealing the ends ofpipes and simi- IO lar structures, the invention enabling me to seal thepipe in the most secure manner and also to conveniently and easilyremove the plug when it is desired to do so.

This specification is the specific description of one form of theinvention, while the claims are definitions of the actual scope thereof.

Reference is to be had to the accompanying drawing, forming a part ofthis invention, in which the figure represents a sectional view of theinvention.

0. represents a pipe which has a bell or enlargement a at its end, theinner walls of which are irregular in form, involving an undercut ortapering portion, the purpose of which will fully appear hereinafter.

b is the plug, which is threaded, as shown, and provided with a squarednipple b for the application of a wrench.

0 represents a wooden or other annulus which is set in the bell a inengagement with the square shoulder at the base thereof, so as to form aseat for the inner end of the plug b, which bears squarely on theannulus to limit the inward movement of the plug, as shown in thedrawing.

(Z represents a packing of hemp, jute, or the like, which is woundaround the plug below the threads. This packing is applied to the plugbefore the plug is seated in the bell of the pipe, and then the plug,with the packing, is introduced into the bell to occupy the positionshown in the drawing and the packing is tightly rammed in place. IVhenthis has been done, a mass of molten lead is 5 poured into the bellaround the plug and raised to a level commensurate with that of the endof the pipe. This lead is allowed to set in the bell, thus forming aleaden nut,

(represented at c in the drawing.) If desired, the lead may be forceddownward into the bell while the lead is setting, so as to form a morecompact mass. The stopper thus formed is necessarily hermetic.

To remove the plug and open the pipe, it is only necessary to strike thenipple l)" a sharp blow, loosening the plug within the nut, and then theplug may be unscrewed. The nut itself cannot be forced out of the bellof the pipe by internal pressure, since the irregular or undercut wallsof the bell form a shoulder, against which bears a correspondingshoulder on the nut, and this holds the nut securely in place.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a pipe'stopper, the combination with the pipehaving an enlargement or bell at its end, and an internal shoulder atthe base of the enlargement, of an annulus fitted in the enlargement andbearing 011 the shoulder, a threaded plug set in the enlargement andbearing at its edges on the annulus to limit the inward movement of theplug, a packing placed around the plug directly contiguous to theannulus, and a metallic nut molded into the enlargement of the pipe andaround the threaded portion of the plug.

2. In a pipe-stopper, the combination with the pipe having anenlargement or hell at one end, and an internal shoulder at the innerend of the enlargement, of an annulus fitted in the enlargement andbearing on the shouh der, a plug set into the enlargement and engagingat its edges the annulus to limit the inward movement of the plug, and anut located in the enlargement and engaging the threaded portion of theplug.

In testimony whereof I have signed my nameto this specification in thepresence of two subscribing witnesses.

GEORGE B. SIDELINGER.

Witnesses:

W. L. CUNDIEF, IV. R. LAWRENCE.

